73297-25-3 Cuprate(5-), ((3,3'-methylenebis(6-((3-((2,4-disulfophenyl)azo)-2,4-dihydroxyphenyl)azo)benzoato))(7-))-, pentasodium Cuprate(5-), (5-((3-carboxy-4-((5-((2,4-disulfophenyl)azo)-2,4-dihydroxyphenyl)azo)phenyl)methyl)-2-((5-((2,4-disulfophenyl)azo)-2-(hydroxy-kappaO)-4-hydroxyphenyl)azo-kappaN1)benzoato(7-)-kappaO)-, pentasodium